Improvement in carbonic-acid-gas generators



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CARBON'IC ACID GAS GENERATOR.

No. 180,982. Patented Aug. 8, 1876.

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CARBONIC ACID GAS GENERATOR.

No. 180,982. Patented Aug. 8, 1876.

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IMPROVEMENT IN CARBQNlC-AClD-GAS GENERATORS.

Specification forming part of Letters Patent No. 180,982, dated August8, 1876; application filed June 10, 1876.

' To all whom it "may concern:

Be it known that I, Orcro ZWIETUSGH, of

Milwaukee, Wisconsin, have invented a new and useful Improvement inCarbonic-Acid- Gas Generators, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,making a part of this specification, in which- Figure 1 is a perspectiveview of my invention.- Fig. 2 is a vertical cross-section. Fig. 3 is aside elevation with portions broken away. Fig. 4 is a detail view of thedouble coiled spring. Fig. 5 is a partial section through 3 y of Fig. 1.

The object of my invention is to produce an economical, compact, andconvenient generator and washer, provided with automaticallyoperatingcontrolling devices, as hereinafter more particularly described andclaimed.

In the said drawings, A is the generator, and B the gas-washer. In theupper part of the generator, and corresponding in outline, is a chamber,G, to contain the acid, and it is provided with a flexible pipe leadingto the generating-chamber A, the pipe resting on and supported by acompressing-hook, b, attached to the lower end of a sleeve, d, whichrises through the central opening 0 of the acidchamber, and is attachedto a flexible diaphragm, f. This diaphragm fhas its outer edge securedbetween the edge of a central opening, g, in the cover 0 of the vesselA, and a screw cap, it. The sleeve terminates in a grooved end, t, andis closed with a stuffingbox, K, through which descends a rod having anagitator, m, at its lower end, and a crankhandle at its upper end. To abail, 12., attached to the top 0 is pivoted a lever, P, having a centraleye fitting over the end of the sleeve d, and lugs 10 p enter the groove*5. The other end of the lever is provided with holes 1" r, in which tosecure one end of a spring, R. The other end of the spring is attachedto the handle s of a lever, S, which is pivoted to a plate, T, at t,rising from the top of the cover. The plate T has aseries of holes, 1:c, arranged concentrically to the pivot t, and a pin, 1, and hole 2allow the lever S being fastened at any one of the holeso, and therebydistending the spring B to any desired amount, so as to throw anynecessary pressure on the flexible diaphragm f, and control the acidcut-off at a by means of the sleeve 01 and clamping-hook b. The movementof the lever S on its pivot t is eccentric to the movement of the springR around the end of the lever P. The holes 1; U are numbered to indicatethe number of pounds pressure a given distention of the springindicates. By turning the lever S horizontally and the handle upward,the lever P will be lifted and the pipe (1 closed, and kept soregardless of any pressure within the chamber. F is a conduit tointroduce the alkali, and it passes through the acid-chamber c, and isclosed by a screw-cap, 4, and 5 is a passage for the acid, also closedwith a cap.

After the gas is generated it passes through the pipe 6 to the washer.Located on this pipe is a safety-valve and gage, G, which is constructedas follows: A. barrel, 7, incloses a piston, 8, having a rod, 9,projecting through an opening in the top, and a coiled spring, 10,around the rod. Above the barrel is an indicating-hand, 11, and dial 12,the end of the rod 9 bearing against the hand. A reliefvalve is shown at13. The pressure in the chamber A is exerted against the piston 8, andthe rod is forced upward, so as to indicate, by the hand 11, the numberof pounds per square inch. When the piston is forced past the opening 13the gas escapes to the air, and no danger of explosion can exist. Bymeans of the screw-cap 14 on the end of the barrel the spring can becompressed more or less, and the relief-valve set to operate at anygiven pressure, graduation-s being marked as seen in Fig. 1. Apressure-equalizer, I, is located between the washer and the beer-barrelin which the gas is to be used. This is for the purpose of utilizing theback pressure to cut off the supply of gas when the pressure in thebarrel becomes too heavy. A barrel, 16, communicates with the washer orpurifier by means ofa pipe, 17, provided with a channel openingdownward. In this barrel is a piston, 18, with a rod, 19, and a spring,20, coiled around it. Attached to the lower side of this piston is astirrup-valve, 21, (see Fig. 5,) arranged to close the channel in pipe17. The

distention of the spring keeps the valve open in its normal condition,and the amount of back pressure required to close. the valve is governedby the compression of the spring through the medium of the screw-cap 22.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The levers P and S, moving eccentrically to each other, incombination with aiconncct ing double coiled spring and a perforatedplate, T, substantially as described.

2. The safety-valve and gage combined, consisting of the barrel 7, withopening 13, screwcap 14, piston 8, spring 10, rod 9, hand 11, and

gialh12, all constructed and, operating as set.

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3. In a pressure-equalizer, the combination of a dow-imard-openingchanne],.l1,7, astirrupvalve; 21', and arpiston, 18,lwitliaxcoiledspring, 20, around its rod, substantially as described.

4. In combination with a ca'rbonic-acid-gas generator, theinternally-arranged acid-chamber 0, provided with thecentral opening e,and traversed with an alkali-channel, F, as and for the purposedescribed.

OTTO ZWIETUSOH. Witnesses:

WILLVELFMOXON, R. K. EVANS.

